Means for supplying explosive vapors for operating rock-drills.



PATENTBD JULY 2, 1907.

o. o. DURYEA. MEANS PoR SUPPLYING EXPLOSIVB vAPoRs FOB, OPERATING ROCKDRILLS.

APPLICATION FILED MAY 23, 1904.

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orso-o. DURYEA, oFBRooKL'Yn NswYoRx, AssIGNoR ToNA'TIo'NAL GAS DRILLCOMPANY,

Af CORPORATION CALIFORNIA.

MEANS-Fon surrnvrnenxrnosrvn vai-ons FOR ornnn'rrNeRooK-DRILLS.

` Specification-of Letters Patent. ,l Applioatiqnled May 23,1904. Seriallio. 209.185.

Patented July 2, 1907.

Toy all whom it may concern: 4

Be it known that I, Orne CROMWELL DURYEA, a citizen of the UnitedStates, residing at Brooklyn, in the county of Kings and State of NewYork, haveinvented .new and useful Means for Supplying Explosive Vaporsfor Operating Rock-Drillsand other Tilting Tools, of which the followingis a specification. An object of this invention is to facilitate thevconrock drills and the like.

Another object is to provide-efficient and convenient meansforaccomplishing the first object above stated.

`venience of handling and operating' explosionactuated The class of rockdrills to which I more particularly refer is that in which the drill isdirectly carried and operated bythe piston rod of a double acting gas orvapor engine which 'is swiveledor pivotally mounted on a tripodor'vother suitable support so that the drill may be tilted and turnedand operated in various directions. Drills of this kindare liable to besubjected to frequent and rough handling and an object is to providestrong compact vapor supplying means adapted to fulfil all therequirements of use with such drills without getting out of order. l 4l' This invention relates to novel construction, combinations andarrangements of partswhereby the means v for supplying the explosive`vapors for operating gasolene ornaphtha rock-drills and the like willbe brought into a most compact and convenient form and made readilyoperable after rough or other handling, Whenever thc drill is set uporadjusted for use in any position.

Another object is to lmake provision for supplying explosive vapors withcertaintyfand uniformity to en gines having variable stroke and withsmall aswell as large displacement in the cylinders. y

Another object' is to provide compact explosive vapor supplying meanswhich`will'supply the vapor to the engine as directly as possible afterthe explosive mixture has been produced. p

In carrying out this invention .l provide a combined gasolene or naphthareceptacle and vaporizer; and ad'- justably connect the same directly tothe body of the drill actuating engine. Such' connection is preferablypivotal, the combined receptacle and vaporizier being mountedA to turnon a substantially horizontal axis` and being a practical part of theengine, to b'e moved about therewith and capable of being brought' toapproximatlely level position regardless of the 'tilt given to the drin.r y

The invention further relates to specific construction wherebythecombined vaporizer and receptacle is adapted to be readily andconveniently attached to and adjusted on the body of the engine andwhereby the satisfactory operation of the vaporizer is insured.

It is to be understood'that thedevice is applicable for using: alcoholand other inflammable volatile liquids.

The invention maybe embodied in various forms. i l The accompanyingdrawings illustrate the invention in the form 1 at present deem best. p

4Figure' lis a vertical section on line 1 -I, Figs. 2 and 3 showing adevice embodying this invention as applied to a swiveled gas or vaporoperated rock drill, portions of which, together with the usual tripod,swivel,"and accessories are omitted from the view.

' The trunnion bolt mixing tube cap and bushing are omitted from thisview.

`In a general way 1 designates a gas or vapor engine body, and 2 acombined vaporizer and receptacle for volatile. inflammable liquids,mounted thereon and arranged to supply vapors thereto.

flange on the engine body` 2 and fitting an annular grgove 4 in the body'5 of the combined receptacle and vaporizer', which -is pivotallymounted on said engine body by means of said trunnion, and a bolt 6passed `through a hole 7 and screwed into a seat on the engine 9 is thechamber for the liquid to be'vaporiz'ed. To the floor of this chamber issecured the vaporizer 10' `provided with a float valve chamber 11, aiioat valve 12 therein for closing the supply port 13, an air inlet orport 14, a vaporizing passage or mixing tube 15, nozzle 16, and needlevalve 17 therefor for feeding the volatile liquid to the vaporizingpassage the outlet from which is a port o r vapor passage 18 withinA thecircular seat or trunnion, and communicates through engine ports 19, 20with the rear compression chambers, not shown, of the engine.

It will be seen thatthe Iannular ange 3 forms Va bearl ing face uponwhich the vaporizer is adapted to fit and rotate, the inlets to theengine-cylinder being within the periphery of said bearing-face, and thebolt 6 constituting a fastening member located centrally of the turningmovement of the vaporizer and adjustably holding said vaporizer in placeagainst .the cylinder. lt is necessary that the vaporizer be located atthe side of the engine-cylinder instead of the end thereof, in orderthat it adjust itself to the tilting movements to which the cylinder issubject inthe class of engines to which this invention pertains.l I

mainly formed of asing'le piece.' v For convenience the float valvechamber is a straight'tube closed by a screw plug or cap 21. The mixingtube 15 terminates inside the. liquid chamber or receptacleQ and isclosed by a screw plugv or `cap 22 which is small enough to vbe insertedand. removed through the hole 23I in the top of the receptacle which isclosed by a vented screw plug 24. The bolt 6`passes' through the mixingtube and Fig. 2 is a vertical section on line II-II Figs. 1 and 3.Fig.,3 is afragmental plan of the same partly in section.

3 is a circular seat or trunnion formed as an annular Preferably thereceptacle and the vaporizer trame are vapor passage. By unscrewing thebolt from its seat and removing the plugs 24 and 22, the bushing 25 canbe inserted and withdrawn, and replaced by other bushings, vnot shown,having different size bores for regulating the bore of the air mixer. vl

26 is a lscrew entering a gain ain the bushing for holding the bushingin place.

27 is an air screen held in place across the air port by a screw ring28. Said screen is preferably formed of a number of wire gauze cones 29spaced apart byrings 30'." These Wire gauze cones serve to -holdgasolene in starting the vaporizer but may be omittedor used as desired.

31 is a gasket in the groove 4 tol prevent leakage at y the trunnionjoint.

Preferably the trunnion 3 and the' branches ofthe vapor passage leadingto the engine ports are formed by a piece 33 fastened to the engine bodyby bolts at 34 but the same may be made integral with the engine bodyand other changes in the construction may be made without departing fromthis invention. An advantage of constructing the device in pieces asshown is that by 'removing the piece 33 and shipping it separate fromthe engine body convenience and freedom from danger of breakage issecured. In order to operate the iioat valve, 12,to cause its needle toopen the supply port 13 and yet avoid a-ny leakage of theinfiammable-luid, a. fine hole 35lis made through the floor of thereceptacle into the top of the oat valve chamber, a tube 36 is insertedthrough the liquid receptacle and soldered or otherwise secured withtight joints to the floor and, the top of the receptacle to form a guidefor a shouldered rod 37 which is provided at the lower end Witha pin 38in the hole 35 to push the iioat down.

39 isa spring forretracting the rod.

40 is a slot in the outer end of the rod and 41 is a pin fixed to tube36 and .passing through-the slot to hold the rod in the tube. The lengthof the slot determines the length of the throw of the rod.

42 is a tube cast integral with and extending across the air port-14 andforming the way for the feedl valve.

43 designates bathe plates fastened to the cover 44 to prevent sloshingof the liquid. They extend transversely to the axis of the engine bodyso that the jar from the reciprocating piston will not cause thegasolene or other volatile liquid to either feed irregularly or fail tofeed.

. In practice, when the bolt' is loosened the combined liquid receptacleand vaporizer will, by force of gravlity, tend to4 come to the verticalposition shown, re-

gardless of the. tilt that may be given the engine body 1 and when theengine is set, the-bolt will be tightened, thus vfixing the receptacleand vaporizer in upright position'. The bolt is located near the centerof gravity, though slightlytherefrom so that any jar of the engine willnot be aptto disturb the adjustment. The vaporizer and lreceptacle maybereadily detached and packed for transportation or storage, and when inplace onthe engineiall the operable'parts are convenient to thesoperatorofthe engine ordrill; and, by removing the -bolt 6 and v'the lscrew caps'or plugs access tethe interior can be gained. The cover may be solderedor otherwise fastened in place. In Fig. 3 screws 45 are shown asfastenings therefor.

y46 is a screeny over the supply port i3 to prevent clogging of thesame.

Having described my invention, what I claim and desire to secure byLetters Patent of the United States ist- 1. The combination of an enginebody provided 4with a -circular bearing face and an inlet within theperiphery of said face; a combined vaporizerand receptacle for voiatileinflammable liquids engaging said face to turn thereon, and means forholding said vaporizer and receptacle against said face.

2. The combination of an engine body provided with a circular bearingface and an `inlet within the periphery of said face, a combinedvaporlzer and receptacle for volatile inammable liquids engaging saidface to turn thereon, and an attaching member for said vaporizer andreceptacle arranged centrally of the turning movement thereof.

3. A gas or vapor engine having a circular seat provided with Aa porttherein for the explosive mixture, a vaporizer mounted to turn in saidseat and connected to supply explosive charges to said port, and meansengaging said seat axially of the turning movement of the vaporizer foryreleasably fixing the vaporizer to its`seat.

4. A gas or vapor engine having a hollow vaporizer support communicatingwith its inlet ports :ind a vaporizer and liquid receptacle journaied onand communicat- -ing with the hollow support.

5. 'lhe combination ot an engine body. a liquid receptacle having apassage leading from the atmosphere and opening through one side of thereceptacle, and commuA nicating with ports of the engine. a bolt throughthe receptacle and passage securing the receptacle to theengine body,and means connected'with the receptacle for supplyingfliquid therefromto' said air passage.

6. A receptacle having a passage therethrough, a iioat valve chamberfastened to the iloor thereof, said iioor being furnished with two holesopening into the chamber, a float valve in said valve chamber andcontrolling thc opening through one of said holes, a tube surroundingthe other hole and extending through the receptacle, a spring supportedrod in said tube having a pin in said hole for moving the iioat, andmeans for feeding liquid from said iioat chamber to said air passage.

7. The combination with an engine body, of a combined liquid receptacleand vaporizer having an air passage supplied with liquid from thereceptacle and having a hole in the top and a hole therebeneath in saidair passage and means for temporarily closing said holes.

8. A piece constructed for attachment to an engine body and having apassage for supplyingr explosive vapor thereto, and a combined liquidreceptacle and vaporizer swiveled the side thereof opposite the enginebody and constructed and arranged to supply explosive vapor to.

. o'rHo c. neurali.

Witnesses JAMES R. TowNsENo, A'rINA DUBYEA.

